Firearm



C. B. DYGERT.

FIREARM.

APPLICATION FILED IAN.Io. 1920.

1,381,291 v PatentedJune 14, 1921.

WITNESSES: INVENTOR Niro STAT NT OFFICE.

CHARLES '.B. DYGERT, OF ILION, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS,TO REMINGTON rARMS COMPANY, INC., OF NEW YORK, N. Y., A CORPORATION OFDELAWARE.

FIREARM.

Specification of Letters Patent. Patented June 14, 1921.

Application led January 10, 1920. Serial No. 350,561.

especially applicable to that class of smallarms among others, which arecommonly designated as auto-loading pistols, and which usually comprisethree kprincipal members, including a frame; a bolt-carrier (orbreechslide) slidably mounted on the frame; and a non-reciprocatingbarrel slidably supported at its forwardend in the bolt-carrying slide,and at its rear end detachably connected to the frame.

My present invention comprises an improvement on the invention shown andclaimed in the application of John D. Pedersen, S. N.'204,149 (renewedas S. N.

i 314,426) which relates to an improved in- Aso terlock connection fordetachably uniting the barrel to the frame, comprising a transverse barlor cross-bar which directly andl releasably unites the barrel to theframe.

One of the principal objects of this invention is to provide such across-bar which shall be continuallysubjected to frictional control by aforce derived from the breechslide-actuating spring and transmitted tosaid cross-bar through the barrel, breech- `slide and frame.

More specifically it is an object to provide clearance between thebarrel and frame and otherwise so to arrange the various coacting partsthat the barrelv and frame uniting cross-bar continually supports thereaction of the breech-slide-actuating spring and therefore isfrictionally held in lace thereby against ready inadvertentdisplacement. These and other features', capabilities and advantages ofthe invention will appear from'VI the subjoinedA detail description ofone embodiment and a modification thereof,

y illustrated in the accompanying drawings,

Vin which Figure 1 is aside elevation, partly in seclocated incrosstion, of an automatic pistol embodying my present invention;

Y Fig. 2 vis a sectional view on the line 2-2 of Fig. 1, and

Fi 3 is a-partial View similar to Fig. 1, showin a slight modification.

In said drawings the numeral 4 designates generally the frame of anauto-loading pistol of any type to which my invention is applicable.This frame member may in practice oe of any suitable design andproportions, the design shown being substantially that illustrated inapplication, S. N. 42,774,

led July 30, 1915, by John D. Pedersen, which may be considered typicalof various other such` frames well known in this art. The frame isformed with a handle `5 of usual or suitable form.

The numeral 6 designates the breech-slide, shown sldably mounted on theframe 4 by the usual interengaging rib and groove joint 7. Thebreech-slide 6 carries the breech block 8 which may be rigidly connectedto the slide or be relatively movable as in said Pedersen application S.N. 42,774. The

-numeral 9 designates the trigger which may be of usual form and servesto' release the firing mechanism (not shown) The barrel 10 1ssubstantially7 inclosed within the breech-slide chamber, tne forward endbeing slidably supported in the bearing 14 which may be formed as abushin Isecured to the breech-slide. The bus ing shown herein is thesub'ect matter of an application filed by C. C. lioomis, December 4,1919, S. N. 342,397. Surrounding the barrel and resting against saidbearing is the breech-slide-actuating spring 13, the rear end of whichbears against a shoulder on the barrel or againsta ring 15 which may beformed with a sleeve extension 15 surrounding the first few coils of thespring and concealing them from view through the ej ection port 1'6.

The rear end of the barrel vand the frame are formed with cooperatinginterlock portions as a lug 11 on the barrel fittingin a recess in theframe. fixed relation to the frame, both 'vertically and horizontally bymeans of a cross-bar 12 bar Seats such as apertures The bami is heid in4 in the frame and 10 in a'fportion of the A barrel or an extensionthereof as the lug 11. This cross-bar may be of circular crosssecinadvertent removal.

tion the reaction of the breech-slide-actuat-l ing spring is alwayssupported by the crossbar 12 except possibly during'the very shortinterval when the bullet is passing from thel barrel at which time thecross-bar restrains forward movement of the barrel. The crossbar 12 istherefore at all times under africtional 'control and is thereby Vheldagainst Another important feature of my present invention is that thehole 10 is entirely in the barrel and the hole 4 is entirely in theframe. For this reason, these holes are more easily formed and moreaccurately located than would be the case if they extended to the edgeof the frame or barrel. For this reason, also, the barrel is fixedlysecured to the frame against not only longitudinal but also againstvertical movement, although the interlocking portions of the barrel andframe are not undercut or dovetailed as has been proposed heretofore.This results in a cheaper constructiom. without dependin upon thebreech-Slide 6 to llimit the upwar movement of the barrel. This rigidconstruction provides a more accurately shooting arm by preventing anyvertical movement of the barrel and Vresults in a more rellable arm inthat the primer is always properly alined with the firing' pin point.

It is well-known that in manufacturing l the parts of firearms of thegeneral class herein represented, it has become customary to makecylindricalopenings or holes at certain convenient points in the part orparts from which these parts may be locatedby -means of -suitable plugswhich are a part of the fixtures by means of which the succes- -sivefinishing operations are performed in the manufacture of the firearm.Accordlngly in my present improvements, es e- ."cially when thebarrel-and-frame-unitlng lpin as 12, is a c lindrical one, the bore at 4in th -e frame' an Y -the bore at 10 in the barrel,

' ma be utilized as gaging points from which to ocate other cuts, andthe making of other specific dlmensions, on the rearward end of t e.barrel and with relation to working faces on the frame and within theslide 6, so that these 'several parts when the mechanism isl assembled,shall havev an accurate relationship thus` indirectly obtained. Thus, asregards the rear face lof the barrel and the corresponding forwa'rd.face of the frame, these may now bemade with a low degree of accuracyproviding a free space at 17 "and also thereby lavoiding the necessltyfor a highly precisioniz'ed locating of' the said'barrel and framesurfaces. By these-means the machining operations in the 'production ofthe arm l found of great utility in holding the cross, bar in placeduring the time the recess in the slide is passing the end of thecross-bar in the device of said application.

The cross-bar being merely frictionally held may be readily withdrawnfor disassembling the arm which in the form shown may be done b movingvthe breech-slide and barrel forwar ly off the frame. Y

What I regard as m invention and desire to secure by Letters atent ofthe United States is 1. In a firearm, the combination FWith-a` frame anda barrel, of a slide supported for.

reciprocating movements forwardly andV rearwardly on the frame',V Isaidframe and barrel each having' near the rearward end. of the barrelinterlock portions provided transversely with alinedl cross-bar seats, abarrel-and-frame uniting cross-barfdisposed in said alined seats, and' aSlide-actuating spring bearing againstsaid slide and against saidbarrel, the parts'being so fitted that the Areaction of said spring 'issupported entirely by said cross-bar, whereby it is frictionally held inplace in said cross-bar seats.

2. In a firearm, the combination with a frame, of a chambered slidesupported on the frame and having depending slde-walls slidably engagingvthe frame, a barrel in the chamber of the slide and having an enlargedrearward end, a slide actuating 4sprlng reacting against said enlargedbarrelend, said enlarged barrel-end and the frame having interlockportions provided with alined cross-bar seats, and -a cross-bar disposedin said alined seats of the frame. and barrel; said parts beili'g sofitted that the reaction of said spring is supported by said cross-bar,whereby it is frictiona'lly held in place in said cross-bar seats.

3. In a firearm, the. combinationwith a frame, of a chamberedslidesupported on the frame and having de ending side-walls slidably engagingthe rame, a barrel in the chamber of the slide and having an enlargedrearward end, a slide-actuating spring' reacting against said enlargedbarrel-end, said enlarged barrel-endI and the frame having interlock.portions provided' with alined cross-bar seats, and a cross-bar disosed in said alined seats of the frame an barrel; the-parts being sofitted that the barrel is restrained against longitudinal movement bysaid cross-bar, which therefore supports the reaction of said spring andis frictionally heldin place thereby. f

4. In a firearm, the combination with a. frame and with a barrel, of aslide supported "for reciprocating movements forwardlyand rearwardly onthe frame, said frame and barrel each having near the rearward end ofthe barrel interlock portions provided transversely with alinedcross-bar seats, a barreland-frame-uniting cross-bar disposed in saidalined seats, and. a slide actuating s ring bearing against said slide.1and barre the said parts being so fitted that forward and rearwardmovement of the barrel -is restrained only by said cross-bar, wherebysaid cross-bar supports the reaction of said spring and is frictionallyheld in place thereby.-

J 5. In a firearm, the combination with a frame, of a chambered slidesupported on the frame and having depending side-walls slidably engagingthe frame, a barrel in the chamber ofthe slide and having an enlargedrearward end, a slide-actuating spring reacting against said enlargedbarrel-end, said enlarged barrel-end and the frame having' interlockportions provided with alined cross-bar seatsLand a cross-bar disposedin said alined seats 4of thel frame and barrel; the said parts being sofitted that longitudinal movement of the barrel is restrained onlybysaid cross-bar, whereby said crossbar supports the reaction of saidspring and y is frictionally held in place thereby.

CHARLES B. DYGERT.

